The YSL-891Z was developed with Wycliffe Gordon and Andy Martin.
The YSL-891Z comes with 2 interchangeable leadpipes. the NY leadpipe is longer and was developed with Wycliffe Gordon while the LA leadpipe is shorter and was developed with Andy Martin.
The new balancer found on the YSL-891Z perfectly proportions the instrument's weight.
The chrome-plated nickel-silver drawn inner slide is very durable and has a quick, sensitive response. In addition, it is a one-piece drawn slide.
The one-piece, drawn, brass outer slide maintains an accurate diameter throughout its length, and this type of construction ensures airtightness, smooth action, and exceptional durability. The outer slide is fit with extremely close tolerances making the horn respond quickly and effortlessly.
A one-piece bell has an axial (lengthwise) seam, making it a continuous extension of the instrument's material. This results in pure, uniform resonance and superior tone. A hammered yellow brass bell produces a pure and perfectly-balanced tone with quick response and extra presence due to advanced manufacturing techniques.